311121311028 has 48 divisors (see below), whose sum is σ = 799346548224. Its totient is φ = 93398067040.

The previous prime is 311121311027. The next prime is 311121311113. The reversal of 311121311028 is 820113121113.

It is a junction number, because it is equal to n+sod(n) for n = 311121310989 and 311121311007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311121311027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10999800 + ... + 11028047.

It is an arithmetic number, because the mean of its divisors is an integer number (16653053088).

Almost surely, 2^311121311028 is an apocalyptic number.

It is an amenable number.

311121311028 is an abundant number, since it is smaller than the sum of its proper divisors (488225237196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311121311028 is a wasteful number, since it uses less digits than its factorization.

311121311028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22027972 (or 22027970 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 24.

The spelling of 311121311028 in words is "three hundred eleven billion, one hundred twenty-one million, three hundred eleven thousand, twenty-eight".